The IUCN plant red data book :  comprising red data sheets on 250 selected plants threatened on a world scale / 
compiled by Gren Lucas and Hugh Synge for the Threatened Plants Comittee of the Survival Service Commission of ICUN, ... 
 - Morges, Switzerland :  IUCN,  1978. 
 - 540 p. ;  25 cm. 
<br/><br/><label>ISBN: </label>2880322022 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Endangered plants.<br/>Rare plants.<br/>Plant conservation.